noun, plural port·man·teaus, port·man·teaux [pawrt-man-tohz, -toh, pohrt-; pawrt-man-tohz, -toh, pohrt-] /pɔrtˈmæn toʊz, -toʊ, poʊrt-; ˌpɔrt mænˈtoʊz, -ˈtoʊ, ˌpoʊrt-/. Chiefly British.
Origin of portmanteau
Word Origin for portmanteau word
noun plural -teaus or -teaux (-təʊz)
Word Origin for portmanteau
1580s, "traveling case or bag for clothes and other necessaries," from Middle French portemanteau "traveling bag," originally "court official who carried a prince's mantle" (1540s), from porte, imperative of porter "to carry" (see porter (n.1)) + manteau "cloak" (see mantle (n.)).
Portmanteau word "word blending the sound of two different words" (1882), coined by "Lewis Carroll" (Charles L. Dodgson, 1832-1898) for the sort of words he invented for "Jabberwocky," on notion of "two meanings packed up into one word." As a noun in this sense from 1872.